co·en·zyme
(ˌ)kō-ˈen-ˌzīm 
: a thermostable nonprotein compound that forms the active portion of an enzyme system after combination with an apoenzyme
co·en·zy·mat·ic
(ˌ)kō-ˌen-zə-ˈma-tik
-(ˌ)zī-
: of or relating to a coenzyme
coenzymatic activity
Examples of coenzyme in a Sentence
Recent Examples on the Web
Kathryn Hopkins,
Footwear News,
16 June 2026
The latter is a form of wellness therapy used to replenish Nicotinamide Adenine Dinucleotide (NAD+), a critical coenzyme found in every cell of your body.
—
Essence,
13 Jan. 2026
It’s formulated with coenzyme Q-10, creatine, and provitamin B5, which work together to prevent sagging and wrinkle properties.
—
Jailynn Taylor,
InStyle,
5 Jan. 2026
There is evidence that this coenzyme can improve mitochondrial function within cells and also act as an anti- inflammatory.
—
Dr. Sanjay Gupta,
CNN Money,
26 Aug. 2025
See All Example Sentences for coenzyme
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Noun
These hydrogel eye masks are powered by Bio-NAD, a bioactive coenzyme known for supporting cellular renewal and long-term skin resilience.
—
Kathryn Hopkins,
Footwear News,
16 June 2026
The latter is a form of wellness therapy used to replenish Nicotinamide Adenine Dinucleotide (NAD+), a critical coenzyme found in every cell of your body.
—
Essence,
13 Jan. 2026
It’s formulated with coenzyme Q-10, creatine, and provitamin B5, which work together to prevent sagging and wrinkle properties.
—
Jailynn Taylor,
InStyle,
5 Jan. 2026
There is evidence that this coenzyme can improve mitochondrial function within cells and also act as an anti- inflammatory.
—
Dr. Sanjay Gupta,
CNN Money,
26 Aug. 2025
See All Example Sentences for coenzyme
Cite this Entry
“Coenzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coenzyme. Accessed 5 Jul. 2026.
Copy CitationMedical Definition
coenzyme
noun
co·en·zyme
(ˈ)kō-ˈen-ˌzīm
: a thermostable nonprotein compound that forms the active portion of an enzyme system after combination with an apoenzyme compare activator sense 1
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